| 1 | interchange | Interchange fees charged by card issuers |
| 2 | network | Network fees charged by card brands (e.g. Visa, Klarna, Amex) |
| 3 | value_added_services | Value added service fees such as CVC and address verification |
| 4 | penalties | Penalties assessed by the card brands |
| 5 | 3ds_authentication | 3D Secure authentication request fee |
| 6 | echeck | eCheck fees |
| 7 | fraud_service | Fraud service fees |
| 8 | card_processing | Processing fees related to cards |
| 9 | ach | Fees related to ACH |
| 10 | paypal_activities | Fees associated with non-transactional PayPal events, such as transfers, holds, and currency conversions |
| 11 | tax | Fees related to taxes |
| 12 | money_transfer | Money transfer fees |
| 13 | processor_service_fees | Miscellaneous processor-assessed service fees not directly tied to card transactions (e.g. terminal fees) |
| 14 | account_updater | Fees for using services like Account Updater |
| 15 | adjustment | Fee adjustments, including rebates and corrections |
| 16 | interchange_downgrades | Interchange downgrades |
| 17 | incentives | Incentive fees |
| 18 | reversal | Reversal fees |
| 19 | dispute | Dispute and chargebacks fees |
| 20 | refund | Refund fees |
| 21 | network_token | Network tokenization fees |
| 23 | paypal | Fees associated with PayPal transaction events |
| 9999 | unknown | Unknown |
